Cox was Tony-nominated as Amy, the harried bride-to-be in the Roundabout revival of Company. Other credits include the Vineyard's Flora, the Red Menace, The Batting Cage, The Waiting Room and Bodoni County.

Sam Robards co-stars with Cox. He can currently be seen as Jim, one of the gay neighbors inhabiting Kevin Spacey's subdivision in "American Beauty." Off Broadway he appeared in Roundabout's Misalliance and Second Stage's Moonchildren.

Also in the cast are Joey Slotnick ("The Single Guy"), Kali Rocha (The Ride Down Mt. Morgan) and Eddie Cahill.

The Atruists, set among an eccentric group of New York do-gooders whose politics don't quite match their lives, pokes fun at leftists, fascists, sexists, ageists, racists and every other ist and ism movement in today's world. Five of Silver's plays have received world premieres at the Vineyard: Pterodactyls, Raised in Captivity, The Maiden's Prayer, The Eros Trilogy and My Marriage to Ernest Borgnine. Designing the show are Neil Patel (sets), Teresa Snider-Stein (costumes), Ken Posner (lighting) and John Grimada (sound and original music).

Tickets are $40 and can be ordered by calling (212) 353-0303. The Altruists opens March 6 for a run through the 25th. The Vineyard Theatre is located at 108 East 15th Street.